Sealing device for pipes



July 20,1926. 1,593,041

. w. s'rEwAR-r SEALING DEVICE FOR PIPES Filed Jan. 19 1923 atto: 1 u,

, I v//z Patented July 2o, 1926.

' CLARENCE W. STEWART, on LIMA, oHio.

SEALING DEVICE FOR PIPES.

Application filed. January 19, 1923. Serial No. 613,734.

This invention relates to sealing devices for pipes, and more particularly to sealing devices for water pipes.

An object of the invention is the provision of a-sealing devicerconsisting ot' an end plate and a clamping element which clamping element is adapted to fit over the bead on the end of awater pipe.

A 'further Objectis the provision of a sealing device which will withstand the high pressure usually present in water pipes.

A further object of the vinvention is the provision of a sealing device of simple and durable construction.

In the accompanying drawings, I have shown one embodiment of the invention. In this showing Figure 1 is a side elevation of a water pipe showing the invention applied, i

Figure 2 is a central vertical sectional View, i

Figure 3 is a transverse sectional view on line 3 3 of Figure 2, and,

Figure 41 is a perspective view of the endv plate. ,n Y Y Referring to the drawings, the reference numeral 1 designates a water pipe of ordinary construction having a bead 2 formed at one end for the purpose of receiving the plain end of a similar pipe. As shown, this bead is Vprovided with an outer surface 3 extending substantially parallel to the aXis of the pipe and then curving outwardly, as at 4.

matter of the present invention consists of a two-part clamp 5, having an inner face shaped to conform to the surtacek 3 4; of,

.the pipe. The sections of the clamp are connected to each other by a hinge 6, and the free vends are adaptedto be connected by a bolt 7, passing throughV flanges 8. As shown, a nut 9 is adapted to be arranged on the bolt to retain the clamp closed position.

Y This clampris adapted to support-an end plate over the end of the pipe by means of which the pipe is closed for the purpose of conducting inspections and the like. As shown, the end plate consists of a disk 10 having an annular flange 11 arranged at its periphery. A rib 12 is arranged concentri- Tlie sealing device forming the subject cally with the flange 11 and slightly spaced therefrom, forming n a groove 13. This groove is adapted to receive a strip of packing 1-1,y which abuts theend 15 of the pipe when in assembled position (see Figure 2). The clamp and end plate are provided with openings 16 and 17, adapted to receive bolts 13. Nuts 19 are arranged on the ends of these bolts and by tightening the nuts, the

end plate may be brought into close en-Y gagement with the end of the pipe.

The operation of the device will be apparent from the foregoing description. When a section of pipe is to be inspected, it is necessary to closeor seal its end. The clamp is lirst placed in position by opening one-halt, as'indicated in dotted lines in Figure 3 ofthe drawings, and slipping it yover the bead on the end of the pipe. The

clamp is then tightened by placing the nut 9 on the bolt 7. The end plate is then arranged in position, with the packing strip 14 in the groove 13 and the bolts 18 inserted. v'llhe nuts 19 are then tightened and a sealing is obtained which will electually prevent leakage from the end ofthe pipe.y

It is to be understood that the formof the invention herewith shown and described is to 'be taken as a preferred example ot' the saine, and that various changes in the shape, size, and arrangement of parts may be'resorted to without departing from the yspirit of the invention .or the scope of the subjoined claim.

Having thus described my invention, I

claim A sealing device for a water ypipe having a llanged end, said sealing device comprising a clamping member adapted to be arranged on the pipe inwardly of the flange,

said clamping member Vcomprising a pair of substantially semi-circular sections hinged to each other, the inner face of said sections being shaped to conform to the curvature of an adjacent portion of the flanged end of the pipe, the free ends of said sections being provided with outwardly extending langes, said flanges being provided with openings adapted to aline when the clamping member is in closed position,4 a bolt passing through said openings, an end plate adapted to be arranged over the open-k ing in the end ofthe pipe, said end plate prevgleal Wlx u plurality ef Openings exeurlug axially el Suid pipe section, und beltsY passing through Saul Openings to retain said end pluie in pesten.

In tel'imouy whereof, I a'x my Signujsure.

CLARENCE VJ. STEVRT. 

